Alexa Feist is portrayed Clea Lewis. She’s known for her roles on The Americans (Deirdre Kemp), Royal Pains (Margaret Redding), and Ellen (Audrey Penney), among others. Lewis is also recognized for her “somewhat nasal, squeaky voice” which has been featured in animated films including Ice Age: The Meltdown (Female Mini Sloth/Dung Beetle Mom). The Blacklist airs Thursdays at 10pm on NBC.